(PECL imagick 2.0.0)
Imagick::pingImageBlob — Quickly fetch attributes
$image
) : boolThis method can be used to query image width, height, size, and format without reading the whole image to memory. �˷�����Imagick����ImageMagick 6.2.9���ϰ汾����ʱ���á�
imageA string containing the image.
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Example #1 Using Imagick::pingImageBlob()
Pinging an image from a string
<?php
/* read image contents */
$image = file_get_contents("test.jpg");
/* create new imagick object */
$im = new Imagick();
/* pass the string to the imagick object */
$im->pingImageBlob($image);
/* output image width and height */
echo $im->getImageWidth() . 'x' . $im->getImageHeight();
?>